Distillation, also classical distillation, is the process of separating the component substances of a liquid mixture of two or more chemically discrete substances; the separation process is realized by way of the selective boiling of the mixture and the condensation of the vapors in a still.
All spirits distillers start the fermentation process by adding yeast. Yeast are living microorganisms that eat sugar. Distillers can use wild or airborne yeast, but most use brewer’s yeast or create their own cultured yeast strains to create distinct flavors and aromas.